Community · Halloween
SomerStreets: Monster Mash
- When
- Sunday, October 18 · 1:00 PM – 5:00 PM
- Where
- Somerville Avenue (Church St to Union Square)
Somerville Avenue Somerville, MA 02143 United States - Cost
- Free
- Area
- Union Square, Somerville
Event details & tickets Directions Add to Google Calendar Apple / Outlook
Details checked Oct 13, 2026 against the organizer’s page. Confirm with the venue before you go.
Somerville closes Somerville Avenue between Church Street and Union Square for its annual Halloween street party. Expect live music on two stages, hands-on art activities, local food vendors, and a community Halloween parade led by the School of Honk.
It’s free and runs 1 to 5 PM. If the weather turns, the city has set Sunday, October 25 as the backup date.